Optical measurements of nanoporous anodic alumina formed on Si using novel X-ray spectroscopy set up CLASSIX
✍ Scribed by Mazhar E. Nasir; Bruce Hamilton; Duncan W.E. Allsop
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 408 KB
- Volume
- 268
- Category
- Article
- ISSN
- 0168-583X
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✦ Synopsis
We present X-ray spectroscopy measurements to investigate the chemistry and structure of nanoporous alumina using novel instrument CLASSIX [N.R.J. Poolton, B.M. Towlson, B. Hamilton, D.A. Evans, Nuclear Instruments and Methods in Physics Research B246 (2006) 445] (chemistry luminescence and structure of surfaces by micro-imaging X-ray absorption). X-ray excited optical luminescence (XEOL) measurements show that the porous anodic alumina (PAA) films obtained have blue emission band with a peak position at 2.63 eV (470 nm) which can be attributed to mixed emission from F and F + centres. The L I absorption edge of aluminium in porous anodic alumina has been observed at 76.64 eV that shows a chemical shift from pure aluminium.